North Dakota is bordered by Minnesota to the east.
Minnesota.
The Red River (of the North) forms North Dakota's eastern boundary with Minnesota.
Red River
The country is Eritrea, and it's eastern boundary is formed by the Red Sea.
washington, idaho, montana, north dakota, and minnesota
The US state of Montana has an eastern border with North Dakota and South Dakota.
The US state of Montana's eastern borders are North Dakota and South Dakota.
North Dakota and South Dakota border Minnesota to the east.
The US state of Montana is bordered by North Dakota and South Dakota on its eastern border.
The Missouri flows through western and central North Dakota. The Red River of the North forms the eastern border of North Dakota.
North Dakota's eastern border is shared with Minnesota and North Dakota's southern border is shared with South Dakota. So both Minnesota and South Dakota would be southeast of North Dakota.
The US state of Montana is bordered by both North Dakota and South Dakota on its eastern border.